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EP0128508A3 - Method and apparatus for producing anisotropic magnets - Google Patents

Method and apparatus for producing anisotropic magnets Download PDF

Info

Publication number
EP0128508A3
EP0128508A3 EP84106414A EP84106414A EP0128508A3 EP 0128508 A3 EP0128508 A3 EP 0128508A3 EP 84106414 A EP84106414 A EP 84106414A EP 84106414 A EP84106414 A EP 84106414A EP 0128508 A3 EP0128508 A3 EP 0128508A3
Authority
EP
European Patent Office
Prior art keywords
anisotropic magnets
producing anisotropic
producing
magnets
anisotropic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP84106414A
Other versions
EP0128508B1 (en
EP0128508A2 (en
Inventor
Shigeho Tanigawa
Shuichi Shiina
Kimio Uchida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Proterial Ltd
Original Assignee
Hitachi Metals Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP10212783A external-priority patent/JPS59226367A/en
Priority claimed from JP11786483A external-priority patent/JPS6010279A/en
Priority claimed from JP11785783A external-priority patent/JPS6010610A/en
Priority claimed from JP14713783A external-priority patent/JPS6037577A/en
Priority claimed from JP15597583A external-priority patent/JPS6047409A/en
Application filed by Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Publication of EP0128508A2 publication Critical patent/EP0128508A2/en
Publication of EP0128508A3 publication Critical patent/EP0128508A3/en
Application granted granted Critical
Publication of EP0128508B1 publication Critical patent/EP0128508B1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/003—Methods and devices for magnetising permanent magnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0013—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fillers dispersed in the moulding material, e.g. metal particles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0273—Imparting anisotropy
    • H01F41/028—Radial anisotropy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0231—Magnetic circuits with PM for power or force generation
    • H01F7/0252—PM holding devices
    • H01F7/0268—Magnetic cylinders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/033—Magnet

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)
EP84106414A 1983-06-08 1984-06-05 Method and apparatus for producing anisotropic magnets Expired EP0128508B1 (en)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP10212783A JPS59226367A (en) 1983-06-08 1983-06-08 Production of anisotropic magnet roll
JP102127/83 1983-06-08
JP11786483A JPS6010279A (en) 1983-06-29 1983-06-29 Manufacture of anisotropic permanent magnet
JP117857/83 1983-06-29
JP11785783A JPS6010610A (en) 1983-06-29 1983-06-29 Manufacture of anisotropic magnet roll
JP117864/83 1983-06-29
JP147137/83 1983-08-11
JP14713783A JPS6037577A (en) 1983-08-11 1983-08-11 Production of anisotropic magnet roll
JP155975/83 1983-08-26
JP15597583A JPS6047409A (en) 1983-08-26 1983-08-26 Manufacture of anisotropic composite magnet

Publications (3)

Publication Number Publication Date
EP0128508A2 EP0128508A2 (en) 1984-12-19
EP0128508A3 true EP0128508A3 (en) 1987-04-29
EP0128508B1 EP0128508B1 (en) 1991-04-10

Family

ID=27526080

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84106414A Expired EP0128508B1 (en) 1983-06-08 1984-06-05 Method and apparatus for producing anisotropic magnets

Country Status (3)

Country Link
US (1) US4604042A (en)
EP (1) EP0128508B1 (en)
DE (1) DE3484406D1 (en)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4678634A (en) * 1985-04-18 1987-07-07 Shin-Etsu Chemical Co., Ltd. Method for the preparation of an anisotropic sintered permanent magnet
US5229738A (en) * 1987-06-16 1993-07-20 Kinetron B.V. Multipolar rotor
JPH0452027Y2 (en) * 1987-10-20 1992-12-08
GB8727851D0 (en) * 1987-11-27 1987-12-31 Ici Plc Process for production of bonded magnet
US5049053A (en) * 1988-08-18 1991-09-17 Hitachi Metals, Ltd. Metal mold for molding anisotropic permanent magnets
CA2014974A1 (en) * 1989-03-18 1991-10-19 Ken Ikuma Dies for extrusion moulding
EP0392799B2 (en) * 1989-04-14 1998-11-25 Daido Tokushuko Kabushiki Kaisha Method and apparatus for producing anisotropic rare earth magnet
JP2730766B2 (en) * 1989-08-08 1998-03-25 住友金属鉱山株式会社 Method of manufacturing injection molded powder metallurgy products
US5145614A (en) * 1990-02-14 1992-09-08 Canon Kabushiki Kaisha Process for preparing magnet made of resin
EP0507324A3 (en) * 1991-04-05 1993-07-28 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Composite molding of resin-bonded magnet for machine parts and process for producing the same
JP2694092B2 (en) * 1991-10-21 1997-12-24 キヤノン株式会社 Magnet roller, method for manufacturing the magnet roller, apparatus for manufacturing the magnet roller, developing unit, and copying apparatus including the developing unit
DE69219081T2 (en) * 1991-12-11 1997-07-24 Kanegafuchi Chemical Ind Magnetic roll
US5405561A (en) * 1993-08-31 1995-04-11 Dowbrands L.P. Process for microperforating zippered film useful for manufacturing a reclosable zippered bag
DE69429326T2 (en) * 1993-12-27 2002-05-16 Sumitomo Special Metals Co., Ltd. Process for granulating powder
US6302669B1 (en) * 1995-05-31 2001-10-16 Bridgestone Corporation Apparatus for producing a solid magnet roller using a movable mold
US6125255A (en) * 1996-09-23 2000-09-26 Xerox Corporation Magnet assembly with inserts and method of manufacturing
US5758242A (en) * 1996-09-23 1998-05-26 Xerox Corporation Interlocking magnetic developer roll assembly and method of manufacturing
US5894004A (en) * 1996-11-20 1999-04-13 Xerox Corporation Method for manufacturing magnetic rolls
US6000922A (en) * 1998-07-28 1999-12-14 Xerox Corporation Molding assembly for producing magnetic development rollers having precise magnetic development fields
US6106759A (en) * 1999-03-26 2000-08-22 Cts Corporation Variable orientation magnet molding tool
US6123892A (en) * 1999-05-14 2000-09-26 Cts Corporation Variable orientation magnet molding tool
EP1739811A1 (en) 2004-04-20 2007-01-03 Aichi Steel Corporation Anisotropic bond magnet for four-magnetic-pole motor, motor using the same, device for orientation processing of anisotropic bond magnet for four-magnetic-pole motor
US8039998B2 (en) * 2004-12-17 2011-10-18 Hitachi Metals, Ltd. Rotor for motor and method for producing the same
JP2008233368A (en) * 2007-03-19 2008-10-02 Ricoh Co Ltd Magnet roller, developer carrier, development device, process cartridge and image forming apparatus
CN102844826B (en) * 2010-04-05 2016-09-14 爱知制钢株式会社 The one-piece type binding magnet of shell and manufacture method thereof
US20150197045A1 (en) * 2014-01-10 2015-07-16 Earth Magnets (Hong Kong) Company Limited Method for manufacturing magnetic rollers and system thereof
CN109419391A (en) * 2017-08-31 2019-03-05 佛山市顺德区美的电热电器制造有限公司 Disk mounting assembly and food processor
JP2019105800A (en) * 2017-12-14 2019-06-27 コニカミノルタ株式会社 Magnet roller, developing roller, developing device, and image forming apparatus
CN110931236B (en) * 2019-11-20 2021-07-13 杭州科德磁业有限公司 Injection molding anisotropic bonding neodymium iron boron magnetic tile radiation orientation forming method and device
CN111105918B (en) * 2019-12-31 2022-07-29 上海三环磁性材料有限公司 Compound magnetization device of permanent magnet rotor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2903329A (en) * 1953-04-11 1959-09-08 Philips Corp Device for molding anisotropic permanent magnets

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2398018A (en) * 1941-09-26 1946-04-09 Linley Anthony Manufacture of permanent magnets
JPS5162396A (en) * 1974-11-27 1976-05-29 Myazaki Kasei Kogyo Kk
JPS5347043A (en) * 1976-10-12 1978-04-27 Matsushita Electric Ind Co Ltd Infrared ray lamp
JPS556907A (en) * 1978-06-30 1980-01-18 Fujitsu Ltd Nonsynchronous 4-phase modulation system
JPS5669805A (en) * 1979-11-10 1981-06-11 Tdk Corp Manufacture of anisotropic plastic magnet
JPS56108207A (en) * 1980-01-31 1981-08-27 Fuji Xerox Co Ltd Magnetic roll and manufacture thereof
AT373901B (en) * 1980-05-16 1984-03-12 Henkel Kgaa PROCESS FOR THE PARTIAL REDUCTION OF DELTA 4.17 (20) - AND IF NECESSARY FURTHER DOUBLE BONDINGS IN THE 1 AND / OR 9 (11) POSITION C 21 STEROID CARBONIC ACIDS AND THEIR ESTERS
JPS57130407A (en) * 1981-02-06 1982-08-12 Daido Steel Co Ltd Cylindrical anisotropic resin magnet
JPS57164509A (en) * 1981-04-03 1982-10-09 Fuji Xerox Co Ltd Manufacture of magnet roll
JPS57170501A (en) * 1981-04-14 1982-10-20 Fuji Xerox Co Ltd Production of magneto roll
DE3124854C2 (en) * 1981-06-24 1985-03-14 Reinhard 8057 Eching Mühlbauer High pressure injection system with ultrasonic atomization
JPS5948742B2 (en) * 1982-03-05 1984-11-28 住友ベークライト株式会社 Mold for magnetic field forming

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2903329A (en) * 1953-04-11 1959-09-08 Philips Corp Device for molding anisotropic permanent magnets

Also Published As

Publication number Publication date
US4604042A (en) 1986-08-05
EP0128508B1 (en) 1991-04-10
EP0128508A2 (en) 1984-12-19
DE3484406D1 (en) 1991-05-16

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